Patent Claims Tree

Displays a patent claims tree for all patent claims listed on a current webpage.
Select the red and black "WM" icon on the right side of the address bar in the Chrome browser to see a patent claims tree.
Currently supported on the following websites (at least partially):
- USPTO
- Google Patents (.com, .de, .fr, .co.uk, .se, .ca, co.in, co.nz currently -- send me requests for additional countries).
- FreePatentsOnline
- Espacenet
We at Wolf Mountain IP, LLC do our best to present the claims trees correctly, but we do not guarantee results because the supported websites are dynamic and often changing -- so PLEASE LET US KNOW OF ANY ISSUES YOU ENCOUNTER. The extension is provided 'As-Is' without any express or implied warranty of any kind.
The extension should work for a webpage loaded after the initial installation of the extension, as long as JavaScript is enabled.
Note that no information is collected from the extension -- all handling is done at your local browser.
Multiple dependent claims are not currently fully supported. Also, only claims in English are currently fully supported. Some basic French and German handling is provided.
Visited links on Google Patents pages are highlighted, facilitating review projects.
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Version 2.41
- Removed priority date from header for Google Patents due to Google Patents changes.
- Improved patent litigation search link.
- Removed contribution (donate) button.
Version 2.40
- Added highlighting for visited links on Google Patents pages.
- Disabled permissions not used by the extension.
- Added handling of canceled claims.
- Improved country code handling for Espacenet pages.
- Added a '0' to US pre-grant publication identifiers on Espacenet pages to provide a format used by other patent websites.
Version 2.39
- Added link to Global Dossier (on USPTO).
- Added link to FreePatentsOnline PDF.
- Corrected USPTO Assignments link for 8-digit patent numbers.
- Provided a contribution (donate) button for funding continued development.
Version 2.38
- Added handling for various wording options for computer-readable medium claims.
Version 2.37
- Updated application identifier extraction for newer Google Patents pages.
- Added some handling for 8-digit US patent numbers.
- Modified Google Patents-related links.
Version 2.36
- Improved handling for page updates
Version 2.35
- Modified Google Patents links
Version 2.34
- Added Espacenet claim handling
- Improved German claim text parsing
Version 2.33
- Added links for EP patents, such as to Espacenet, Google Patents, and FreePatentsOnline
- Fixed claims extraction for EP patents in Google Patents (based on updates to Google Patents)
- Added various other minor improvements
Version 2.32
- Added support for India and New Zealand sites for Google Patents
Version 2.31
- Corrected handling of canceled claims.
Version 2.30
- Slightly tweaked claim type handling for one specific use case
Version 2.29
- Updated to use latest USPTO Assignments URL syntax
- Updated to use latest USPTO Maintenance Fees URL syntax
- Fixed EP Register link functionality
- Corrected Application ID extraction for patents.google.com
Version 2.28
- Provided handling for updating of tree for search results for patents.google.com search utility
- Added support for Canada and Sweden sites for Google Patents
- Added support for lack of "www" subdomain
- Added support for lowercase country codes in Google Patents URLs
Version 2.27
- Resolved issue with patent number for some cases
Version 2.26
- Removed kind code for some links
- Linked to new Google Patents (patents.google.com)
- Modified new Google Patents handling for new syntax
Versions 2.24, 2.25
- Added support for new Google Patents (patents.google.com)
Version 2.23
- Modified URL syntax for USPTO Assignments based on new USPTO webpage
Version 2.22
- Added rudimentary support for German and French for EP patent documents in Google Patents
Version 2.21
- Added handling for EP and WO patent documents in Google Patents
Version 2.20
- Added priority date for Google Patents
Version 2.19
- Resolved an issue with Google Patents HTTPS pages
Version 2.18
- Improved claim type parsing
Version 2.17
- Added indication of current lack of support for non-US patent documents in Google Patents
Version 2.16
- Various small modifications
Version 2.15
- Improved claim type detection.
Version 2.14
- Added handling of dependent claims that use language like "recited in".
- Added handling of claims that have numbered sub-components to recognize them as one claim and not multiple.
Version 2.13
- Added HTTPS support for Google Patents
Version 2.12
- Continued to improve claim type detection
- Modified support for Arch Patent
Version 2.11
- Improved claim type detection
Version 2.10
- Added additional parsing for an alternative Google Patents URL syntax
Version 2.9
- Various claim type detection improvements
Version 2.8
- Added separate options screen
Version 2.7:
- Added new (beta) feature to indicate the type of claim
Version 2.6:
- Enhanced claim detection handling for FreePatentsOnline while logged in using FPO's new user interface
- Enhanced claim detection handling for Google Patents using the newer layout (newer patents only)
- Enhanced patent ID capture for Google Patents using the newer URL syntax
Version 2.5:
- Enhanced claim detection handling for FreePatentsOnline while logged in
New features in versions 2.3 & 2.4:
- added handling for US reissues (RE) and design (D) patents
- added USPTO Maintenance Fees link for US patents
- added Google Patents link for US patent documents
- added Google Patents PDF link for US patent documents
- added Google Patents Prior Art Finder link for US patent documents
- added FreePatentsOnline.com link for US patent documents
- added EPO Register link for EP patent documents
- removed link to Justia because it was static
New features in version 2.2:
- Additional analysis performed to further distinguish between independent and dependent claims due to differences in claim language.
New features in version 2.1:
- Handling for some types of multiple dependent claims
- Link to USPTO Assignment database for US patent documents
- Link to Google search for any patent litigation for current US patent
- Link to Justia for searching for patent litigation (not specific to current US patent)
New features in version 2.0:
- Option to display the word count for independent claims
- Highlighting of the claim with the shortest word count
- Option to display a means-plus-function (MPF) language indication (searches for word "means")
- Indication of the patent document identifier
- Several performance improvements, such as refreshing the tree when an open tab is selected